{
    "Function": "_routerSwap",
    "File": "src/utils/Swapper.sol",
    "Parent Contracts": [
        "src/interfaces/IErrors.sol",
        "lib/v3-core/contracts/interfaces/callback/IUniswapV3SwapCallback.sol"
    ],
    "High-Level Calls": [
        "IUniversalRouter",
        "IERC20",
        "SafeERC20",
        "SafeERC20",
        "IERC20",
        "IERC20",
        "SafeERC20",
        "IERC20"
    ],
    "Internal Calls": [
        "abi.decode()",
        "abi.decode()",
        "revert WrongContract()",
        "revert SwapFailed()",
        "revert SlippageError()",
        "abi.decode()"
    ],
    "Library Calls": [
        "safeApprove",
        "safeApprove",
        "safeTransfer"
    ],
    "Low-Level Calls": [
        "call"
    ],
    "Code": "function _routerSwap(RouterSwapParams memory params)\n        internal\n        returns (uint256 amountInDelta, uint256 amountOutDelta)\n    {\n        if (params.amountIn != 0 && params.swapData.length != 0 && address(params.tokenOut) != address(0)) {\n            uint256 balanceInBefore = params.tokenIn.balanceOf(address(this));\n            uint256 balanceOutBefore = params.tokenOut.balanceOf(address(this));\n\n            // get router specific swap data\n            (address router, bytes memory routerData) = abi.decode(params.swapData, (address, bytes));\n\n            if (router == zeroxRouter) {\n                ZeroxRouterData memory data = abi.decode(routerData, (ZeroxRouterData));\n                // approve needed amount\n                SafeERC20.safeApprove(params.tokenIn, data.allowanceTarget, params.amountIn);\n                // execute swap\n                (bool success,) = zeroxRouter.call(data.data);\n                if (!success) {\n                    revert SwapFailed();\n                }\n                // reset approval\n                SafeERC20.safeApprove(params.tokenIn, data.allowanceTarget, 0);\n            } else if (router == universalRouter) {\n                UniversalRouterData memory data = abi.decode(routerData, (UniversalRouterData));\n                // tokens are transfered to Universalrouter directly (data.commands must include sweep action!)\n                SafeERC20.safeTransfer(params.tokenIn, universalRouter, params.amountIn);\n                IUniversalRouter(universalRouter).execute(data.commands, data.inputs, data.deadline);\n            } else {\n                revert WrongContract();\n            }\n\n            uint256 balanceInAfter = params.tokenIn.balanceOf(address(this));\n            uint256 balanceOutAfter = params.tokenOut.balanceOf(address(this));\n\n            amountInDelta = balanceInBefore - balanceInAfter;\n            amountOutDelta = balanceOutAfter - balanceOutBefore;\n\n            // amountMin slippage check\n            if (amountOutDelta < params.amountOutMin) {\n                revert SlippageError();\n            }\n\n            // event for any swap with exact swapped value\n            emit Swap(address(params.tokenIn), address(params.tokenOut), amountInDelta, amountOutDelta);\n        }\n    }"
}